batgrbproduct analysis for trigger=994723

batgrbproduct Analysis for Trigger=994723

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Sun Sep  6 09:59:03 EDT 2020
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger994723/GCN5_download_cron
======================================================================

  Trigger: 00994723      Segment: 000

  BAT Trigger Time: 620991008   [s; MET]
      Trigger Stop: 620991072   [s; MET]
               UTC: 2020-09-05T09:29:42.418620    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 83.6610057085695   Dec: 22.2191792705523  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.95
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    8.95

  Flight Position:   [ source = BAT ]
    RA: 83.6610057085695   Dec: 22.2191792705523  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 83.6821510997596   Dec: 22.2492391986022  [deg; J2000]  
        { 05h 34m 43.7s , +22d 14' 57.3" }
         +/- 2.45912258156764 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.08313206433516 [arcmin] (formal 1-sigma fit error)
    SNR: 8.41125855552217
 
  Angular difference between Flight and Ground position is 2.152241 arcmin
 
  Partial Coding Fraction: 0.359375    [ including projection effects ]

  Duration
     T90: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]
     T50: 64 +/- 
        Measured from: 0
                   to: 64     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 64 second)
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 64     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.131439   0.835790   0.442051  -0.073876
           0.108234   0.115627   0.111534   0.126005 [error]
 Peak      1.131439   0.835790   0.442051  -0.073876
           0.108234   0.115627   0.111534   0.126005 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
=== Fluence/Peak Flux Summary ===
 
              Model    Band1    Band2    Band3    Band4    Band5    Total      
                       15-25    25-50   50-100  100-350   15-150   15-350   keV
Fluence   Power-law 3.67e-07 4.25e-07 3.54e-07 4.96e-07 1.32e-06 1.64e-06   erg/cm2
              Error 6.64e-08 6.15e-08 1.06e-07 2.90e-07 2.32e-07 4.17e-07   erg/cm2
Peak flux Power-law 1.88e-01 1.21e-01 5.03e-02 2.85e-02 3.73e-01 3.87e-01   ph/cm2/s
              Error 3.49e-02 1.69e-02 1.45e-02 1.55e-02 4.93e-02 5.20e-02   ph/cm2/s
 
Fluence   Cutoff-PL 3.69e-07 4.23e-07 3.58e-07 4.55e-07 1.32e-06 1.60e-06   erg/cm2
              Error 6.70e-08 6.68e-08 1.07e-07 3.42e-07 2.40e-07 4.83e-07   erg/cm2
Peak flux Cutoff-PL 1.89e-01 1.20e-01 4.97e-02 2.75e-02 3.73e-01 3.87e-01   ph/cm2/s
              Error -------- -------- -------- -------- -------- 5.49e-02   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band -------- -------- -------- -------- -------- --------   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.264    0.309    -      -           2.18e-03 4.64e-04   51.040 57
CPL   2.580   -0.590     213.7    0.0      1.49e-03 0.00e+00   50.750 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.264    0.309    -      -           2.18e-03 4.64e-04   51.040 57
CPL   2.580   -0.590     213.7    0.0      1.49e-03 0.00e+00   50.750 56
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^-{Ph_index} (minus sign is not included in the index)
Ph_90err   : 90% error of the photon index
Epeak      : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm       : normalization at 50 keV in PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedom
 
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
 
T90 in the 50-300 keV band: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   64.000    0.000   64.000
T90    64.000    0.000   64.000
T50    64.000    0.000   64.000
Peak   64.000    0.000   64.000

Image

Pre-slew 15-350 keV image (Event data; bkg subtracted)

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
   83.6822 +22.2492 0.0229   42.0  167.6       2.4865     8.4  TRIG_00994723       
------------------------------------------
 
Foreground time interval of the image:
  0.000  64.000 (delta_t =  64.000 [sec])
Background time interval of the image:

Lightcurves

Notes:

1 s binning

From T0-310 s to T0+310 s
From T100_start - 20 s to T100_end + 30 s
Full time interval

64 ms binning

Full time interval
From T100_start to T100_end
From T0-5 sec to T0+5 sec

16 ms binning

From T100_start-5 s to T100_start+5 s

8 ms binning

From T100_start-3 s to T100_start+3 s

2 ms binning

From T100_start-1 s to T100_start+1 s

SN=5 or 10 sec. binning (whichever binning is satisfied first)

SN=5 or 10 sec. binning (T < 200 sec)

Spectra

Notes:

Time averaged spectrum fit using the pre-slew DRM

Power-law model
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.26404     ( -0.291112   0.327344 )
Norm@50keV  : 2.17841E-03    ( -0.000472665   0.000455327 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.04 using 59 PHA bins.
# Reduced chi-squared =         0.8955 for     57 degrees of freedom 
# Null hypothesis probability =   6.969416e-01
 
Photon flux (15-150 keV)    in 64 sec: 0.373229 ( -0.0493249  0.0493249 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.32387e-06 ( -2.26898e-07  2.37519e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.58014     ( -0.812243   -1.99234 )
Epeak [keV] : 213.681      (   )
Norm@50keV  : 1.49383E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.75 using 59 PHA bins.
# Reduced chi-squared =         0.9063 for     56 degrees of freedom 
# Null hypothesis probability =   6.731682e-01
 
Photon flux (15-150 keV)    in 64 sec: 0.373280 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.31962e-06 ( -2.41197e-07  2.38778e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.78673   ( 1.78793   1.78793 )
beta        : -2.25978    ( 2.26216   0.289579 )
Epeak [keV] : 6.82376      ( -6.22789 -6.22789 )
Norm@50keV   : 6.15677E-03    ( -0.00208764   0.0264545 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.05 using 59 PHA bins.
# Reduced chi-squared =         0.9281 for     55 degrees of freedom 
# Null hypothesis probability =   6.263825e-01
 
Photon flux (15-150 keV)    in 64 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 8.76661  (-1.61223  1.80721)
R^2/D10^2   : 0.270380  (-0.137987   0.330434)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.44 using 59 PHA bins.
# Reduced chi-squared =          1.218 for     57 degrees of freedom 
# Null hypothesis probability =   1.248203e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.553e-07   6.774e-08
25- 50  5.205e-07   1.183e-07
50-150  1.831e-07   7.325e-08
15-150  9.588e-07   1.904e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 45.7995       (-15.3812      27.9314)
Norm        : 2.18296       (-0.50779     0.767599)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.66 using 59 PHA bins.
# Reduced chi-squared =         0.9413 for     57 degrees of freedom 
# Null hypothesis probability =   6.013014e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.342e-07   6.269e-08
25- 50  4.647e-07   8.371e-08
50-150  4.143e-07   1.778e-07
15-150  1.213e-06   2.704e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.22328        (-0.895643      1.16393)
R1^2/D10^2  : 15.2297        (-11.4956      90.3606)
kT2 [keV]   : 13.5953        (-2.94379      4.71266)
R2^2/D10^2  : 3.95428E-02    (-0.0274725   0.0663564)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.61 using 59 PHA bins.
# Reduced chi-squared =         0.8839 for     55 degrees of freedom 
# Null hypothesis probability =   7.157021e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.798e-07   2.052e-07
25- 50  4.098e-07   2.130e-07
50-150  4.287e-07   2.667e-07
15-150  1.218e-06   5.522e-07

Peak spectrum fit

Power-law model
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.26404     ( -0.291112   0.327344 )
Norm@50keV  : 2.17841E-03    ( -0.000472665   0.000455327 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.04 using 59 PHA bins.
# Reduced chi-squared =         0.8955 for     57 degrees of freedom 
# Null hypothesis probability =   6.969416e-01
 
Photon flux (15-150 keV)    in 64 sec: 0.373229 ( -0.0493249  0.0493249 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.32387e-06 ( -2.26898e-07  2.37519e-07 ) ergs/cm2
 
Cutoff power-law model
Time interval is from    0.000 sec. to   64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.58014     ( -0.812243   -1.99234 )
Epeak [keV] : 213.681      (   )
Norm@50keV  : 1.49383E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.75 using 59 PHA bins.
# Reduced chi-squared =         0.9063 for     56 degrees of freedom 
# Null hypothesis probability =   6.731682e-01
 
Photon flux (15-150 keV)    in 64 sec: 0.373280 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.31962e-06 ( -2.41197e-07  2.38778e-07 ) ergs/cm2
 
Band function
Time interval is from    0.000 sec. to   64.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.78673   ( 1.78793   1.78793 )
beta        : -2.25978    ( 2.26216   0.289579 )
Epeak [keV] : 6.82376      ( -6.22789 -6.22789 )
Norm@50keV   : 6.15677E-03    ( -0.00208764   0.0220684 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.05 using 59 PHA bins.
# Reduced chi-squared =         0.9281 for     55 degrees of freedom 
# Null hypothesis probability =   6.263825e-01
 
Photon flux (15-150 keV)    in 64 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
 
Single BB
 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 8.76661  (-1.61223  1.80721)
R^2/D10^2   : 0.270380  (-0.137987   0.330434)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.44 using 59 PHA bins.
# Reduced chi-squared =          1.218 for     57 degrees of freedom 
# Null hypothesis probability =   1.248203e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.553e-07   6.675e-08
25- 50  5.205e-07   1.146e-07
50-150  1.831e-07   6.861e-08
15-150  9.588e-07   1.936e-07
Thermal bremsstrahlung (OTTB)
 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 45.7995       (-15.3812      27.9314)
Norm        : 2.18296       (-0.50779     0.767599)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.66 using 59 PHA bins.
# Reduced chi-squared =         0.9413 for     57 degrees of freedom 
# Null hypothesis probability =   6.013014e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.342e-07   5.424e-08
25- 50  4.647e-07   8.637e-08
50-150  4.143e-07   1.822e-07
15-150  1.213e-06   2.502e-07
Double BB
 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.22328        (-0.895643      1.16393)
R1^2/D10^2  : 15.2297        (-11.4956      90.3606)
kT2 [keV]   : 13.5953        (-2.94379      4.71266)
R2^2/D10^2  : 3.95428E-02    (-0.0274725   0.0663564)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.61 using 59 PHA bins.
# Reduced chi-squared =         0.8839 for     55 degrees of freedom 
# Null hypothesis probability =   7.157021e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.798e-07   1.976e-07
25- 50  4.098e-07   2.044e-07
50-150  4.287e-07   2.527e-07
15-150  1.218e-06   6.410e-07
Plot creation:
Sun Sep  6 10:03:41 EDT 2020